Reactivity of a Phosphanylalane Complex towards Lewis Bases
Reactivity of a Phosphanylalane Complex towards Lewis Bases
复制标题
膦酰基丙烷络合物对路易斯碱的反应性
DOI：
--
复制
发表时间：
2004
期刊：
影响因子：
--
通讯作者：
M. Scheer
中科院分区：
文献类型：
--
作者：
Ulf Vogel;Karl‐Christian Schwan;M. Scheer
研究了路易斯酸碱稳定的膦丙烷配合物[(CO)5W(H_2PAlH_2·nMe_3)](1)与Lewis碱THF和NMe_3的反应活性。与四氢呋喃的反应导致络合物的分解。其中一个分解产物含有阴离子[{(CO)5W}2PH2]-(2)。在四苯基膦盐[Ph4P][{(CO)5W}2PH2](2a)存在下，[(CO)5W(THF)]与KH反应生成四苯基膦盐[Ph4P][{(CO)5W}2PH2]。1与NMe3反应生成含五配位铝原子的[(CO)5W(H2PAlH2·2NMe3)](3)。化合物3在含有过量NMe3的溶液中表现出NMe3配体的快速交换。用光谱分析和X-射线结晶学对产物进行了表征。
The reactivity of the Lewis acid/base stabilized complex of phosphanylalane [(CO)5W(H2PAlH2·NMe3)] (1) towards the Lewis bases THF and NMe3 has been investigated. The reaction with THF leads to decomposition of the complex. One of the decomposition products was identified as containing the anion [{(CO)5W}2PH2]- (2). This anion could be synthesized independently by reaction of [(CO)5WPH3] with KH in the presence of [(CO)5W(THF)] and was isolated as the tetraphenylphosphonium salt [Ph4P][{(CO)5W}2PH2] (2a). The treatment of 1 with NMe3 leads to the formation of [(CO)5W(H2PAlH2·2 NMe3)] (3) containing a five-coordinate aluminum atom. Compound 3 exhibits a fast exchange of the NMe3 ligands in solution containing an excess of NMe3. The products were characterized by spectroscopic methods and X-ray crystallography.